Universal joint.



R. W. DAVIS.

UNIVERSALJOINT.

APPLICATION man um: 23. I917.

1,270,602 Patented June 25, 1918.

2 SHEETS-SHEEI' 1.

R. W. DAVIS.

UNIVERSAL JOINT.

APPLICATION FILED JUNE 23 1917.

Patented J 11110- 25, 1918.

2 SHEETS-SHEET 2.

. BOBFBT WILLIAM DAVIS, or men cause newsman:

nnivnnsan'aom'r.

Lemme.

To all whom it may concern:

Be it known that I, Ronnrrr WILLIAM DA- we, a citizen of the United States, residing at East Orange, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvementsin Universal Joints, of which the. following is a full, clear, and exact specification.

' f description proceeds.

This invention relates to universal joints, and has for one of its objects to produce the strongest universal ]01I1t-0f argiven diameter.

Anotherobject is to provide a universal v j I p recesses are. spherlcal, asfat 5, while thelr joint with the largest possible bearing surfaces, so as to prevent it from quickly wearingout. Other objects will appear as the The invention will be first hereinafter described in connection with the accompanying'drawings, and then more specifically defined in the claims at the end of the de scription.

In the accompanying drawings,"wherein similar reference characters are used to designate corresponding parts throughout the several views:

Figure l i s a broken side elevation of the, membersf'of the universal joint assembled, and one member turned at the maximum angle with respect to the other member.

joint in straightened position.

Fig. 3 is a section on the line IIIIII of 1 Fig. 2.

Fig. 4 is an 'end view of one of the similarly-shaped supplemental members of the joint.

Fig. 5 is a detailed view of'one of the yokes'used for fastening the members of the joint together against relative axial movement. 1 .Figs. 6 and 7 are detailed side elevations of one of the supplemental members of the joint, saidviews being taken at right angles to each other.

Fig. 8 is a plan view of the spider which is arranged between the two supplemental member V Fig. .9 is a detailed outer face view of one of the lunes of the spider, and

. 5 Fig. IQ is asideelevation of the spider.

I I Specification of Letters Patent. Application filed June 23, 1017. Serial no. 176,479.

Fi L 2 is a broken'side elevation of the 1 joint as shown in Fig. 1.

v 'Patented;June 25,=1918.

The two supplemental members and 2 of the joint are similar information, sothat a description of, one will sn'iiice inmost respects. Referring then to the member 1, it is cylindrical in form with two diametrically opposite projecting prongs 3 having their inner faces ball-reamed at 9 and their lateral edges and ends machined conically, as at 6 and 7, respectively. Between the rongs 3 .concavo-spherical recesses are aimed extendin inwardly from the straight edges 4. he outer surfaces of said innersurfaces are conical, as at 8, thelatter being at opposite sides of a projection or U- shaped internal rib 12'formed on -the prongs and separating the recessesinto nnularly extending segments. The upper face of said pro1ection 12 is ball-reamed with the inner surfaces of the prongs 3. The outer surfaces of the prongs 15. of the member 2 beyond the center of the joint are spherical at 11 and fit into the'spherical outer faces "of the recesses in the member 1,and the prongs 3 of the member '1 are similarly formed to fit in the recesses of the member 2. The marginal portions '14 of'the recesses are conical with their elements tangential to the spl'ierical surfaces, half the angle of said cone, determining the maximum bend of the The prongs are out just short enough so as not to interfere with the members turning to the maximum angle.

Between the two members 1 and 2 there is arranged a spider comprising a ball or sphere 16 having four radiatinglunes, of which two diametrically opposite ones 22 are preferably made integral with the ball, while the other two lunes 23 are fastened to the sphere by a rivet 24. The sphere 16 is The lunes 22 and 23 fit betweenthe lateral faces 6 of the prongs 3 and 15 of the members 1. and 2;"as best shown in Fig. 3. The

curved lat'eralfaces 25 of said lunes bear against said lateral faces 6 of said prongs,

while the spherical outer faces :2? of said lunes fit the spherical surface of the rev of a spider comprisin cesses between the prongs. The conical lateral faces mer e into inclined edges 26 at the ends of the unes. v

@Havin thus described my invention and what I c aim aslnew and desire to secure by Letters Patent of the United States s:--:

1. In a universal joint, the comblnation,

with two supplemental members, each hav- 5 ,ing diametrically opposite'prongs and con .cavo-spherical recesses between said pron the ends of the prongs of one member tting in said recesses of the other member, 'a sphere arran d between the twomem rs, and radlatm luneson said sphere fitting between the lateral faces of the prongs;

2. In a universal "oint, the combination,

v i i with two supplemental members, each having diametrically opposite prongs and concave-spherical recesses between said prongs, the ends of the-prongs of onemember fitting in said reoesses of the other member, of a I spider comprising a sphere arranged between the two members, and radiating lunes on said spherefitting between the lateral faces of the prongs, and means for locking the I" members together against relative mov me a axial '3. In a universal joint, the combination,

two supplemental members, each having diametrically opposite prongs and concam-spherical recesses between said pron s,

of a spider comprising a sphere arranged between the two members, and radiat ng lunes on'said sphere fitting between the lat lp 8 eral faces of the prongs, said sphere beingiu a v the ends of the prongs ofone member tting in said recesses of the other member,

also provided with transverse grooves, and yokes. fitted in said grooves and fastened to said members for locking them together against relative axial movement.

fl. In a universal joint, the combinatien, with two supplemental members, each haw .ing diametrically opposite prongs andsegmental concavo-spherical recesses extending a-nnularly between the lateral faces of said .pron'gs, the outer surfaces of the prongs of each member, beyond the center of-the joint, being spherical to fit into the recesses of the other member, of a spider comprising a [sphere fitted between said members, and

radiating lunes fitted between the lateral cesses of said members.

faces of the prongs, the outer faces ,of saidlunesbeing spherical to also ,fit into the re- 5. In a universal joint, the combination,

apropos with two supplemental members, each having diametrically opposite prongs and 0011- cavo-spherical recesses extending segmentally between the lateral faces of said prongs, the outer surfaces of the prongs of each member, beyond the center of the joint, being spherical to fit into the recesses of the other member, themarginal portions of said. recesses being conical with their elements tangential to the s herical surfaces of the recesses and determining the maximum bend of the joint, of a spider comprising a sphere arran d between said members, and red:-

ating ones on said sphere fitted between the lateral faces of the prongs.

' 6. 'In a universal joint, the combination, with two supplemental members, each havin diametrically opposite prongs, of a spider comprising a sphere arranged be g tween the two members, and radiating lunes on said s here fitting between the lateral faces of tie prongs, said ball also having transverse grooves. in its surface, and yokcs fitted in said grooves and fastened to said members for locking them against relative axlal movement.

7. In a universal oint, the comblnatlon,

with two supplemental members each hav-' ino diametrically opposite prongs with conicalateral faces, of a spider comprising a,

sphere arranged between the tWo members, and radiating lunes on said sphere fitting between the conical lateral faces of the prongs, and means for locking the members together against relative axial movement.

8. In a universal joint, the combination, with two supplemental'members each having diametrically opposite integral prongs and concavo-spherical recesses betweenthe said prongs, the ends of both prongs of each member fitting and extending into the recessesof the other member when the joint is straight, of a spider comprising a sphere arranged between the two members, and

of one of the prongs on the other member," of a spider comprising a sphere arranged between the two members and radiating lunes on said sphere fitting between the lateral faces of the prongs.

10. Ina universal joint, the combination,

, with two supplemental members each having diametrically opposite prongs which 30 v agtheir base forming a U-shaped interna r1 l with conical lateral faces and a con cavo-spherical inner face at its base, there beini concave-spherical recesses in each arranged between the two members, and

mem er one at each side of the base of said radiating lunes on said sphere fitting the lat- U-shaped prongs, the ends of both prongs of em] faces of said prongs.

each member fitting and extending into the In testimony whereof I have signed my 10 5 recesses of the other member when the joint name to this specification.

is straight, of a spider comprising at sphere I ROBERT WILLIAM DAVIS.

flopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

walhinzten, D. 0." 

